Abstract: A printing system includes an image forming apparatus and a host device. An image forming apparatus includes a printing part to perform a printing operation, a receiver to receive a parameter on a drive condition of the printing part from the host device, a storage part to store a parameter for each driver version, and a controller to update the stored parameter according to the received parameter. Accordingly, the quality of printing output can be improved by setting a parameter corresponding to a driver version of the host device and/or the satisfaction of and the convenience for a user can be improved by realizing a user desired/set color output.

Abstract: A method and apparatus to store information on an amount of toner used. The method includes determining whether a customer replaceable unit monitor (CRUM) memory to store information on an amount of used toner is included in a cartridge of an image forming device; storing the information on the amount of used toner in a non-volatile memory of the image forming device when the CRUM memory is not included in the cartridge of the image forming device; and storing the information on the amount of used toner in the CRUM memory when the CRUM memory is included in the cartridge.

Abstract: An image forming apparatus and a developer level calculating method of the same. The image forming apparatus includes a developing unit which includes a developing roller to provide the developer onto a photosensitive body, a developing sensor to sense a developer level, and a supplying roller to supply the developer to the developing roller; a developer bottle which supplies the developer to the developing unit; and a controller which calculates a number of first printing dots of the developing unit, converts the amount of the developer supplied from the developer bottle sensed by the developer sensor into a number of second printing dots, calculates a number of third printing dots on the basis of the number of the first printing dots and the second printing dots, and calculates total developer level of the developer bottle on the basis of the number of the third printing dots.

Abstract: A method of initializing an amount of use of a new consumable part according to replacement of an old consumable part and an image forming apparatus and system for performing the method, the method involves, when the old consumable part is replaced by the new consumable part excluding a memory in an image forming apparatus, transmitting identification information of the image forming apparatus and of the consumable part to a management server; determining whether initialization has been already performed on the amount of use of the new consumable part, wherein the determining is conducted by the management server that uses the identification information of the image forming apparatus and of the new consumable part; generating and transmitting an executable file for initialization of the amount of use of the new consumable part, if the initialization has not been performed on the amount of use of the new consumable part; and initializing the new consumable part by using the executable file.

Abstract: An image forming apparatus and a developer level calculating method of the same. The image forming apparatus includes a developing unit which includes a developing roller to provide the developer onto a photosensitive body, a developing sensor to sense a developer level, and a supplying roller to supply the developer to the developing roller; a developer bottle which supplies the developer to the developing unit; and a controller which calculates a number of first printing dots of the developing unit, converts the amount of the developer supplied from the developer bottle sensed by the developer sensor into a number of second printing dots, calculates a number of third printing dots on the basis of the number of the first printing dots and the second printing dots, and calculates total developer level of the developer bottle on the basis of the number of the third printing dots.

Abstract: A method and apparatus to store information on an amount of toner used. The method includes determining whether a customer replaceable unit monitor (CRUM) memory to store information on an amount of used toner is included in a cartridge of an image forming device; storing the information on the amount of used toner in a non-volatile memory of the image forming device when the CRUM memory is not included in the cartridge of the image forming device; and storing the information on the amount of used toner in the CRUM memory when the CRUM memory is included in the cartridge.

Abstract: A printing system includes an image forming apparatus and a host device. An image forming apparatus includes a printing part to perform a printing operation, a receiver to receive a parameter on a drive condition of the printing part from the host device, a storage part to store a parameter for each driver version, and a controller to update the stored parameter according to the received parameter. Accordingly, the quality of printing output can be improved by setting a parameter corresponding to a driver version of the host device and/or the satisfaction of and the convenience for a user can be improved by realizing a user desired/set color output.

Abstract: An image forming method and apparatus for forming an image on opposite sides of a printing paper which includes operations for receiving a plurality of pages of printing data, processing the printing data to generate first side data in which the printing data is printed in a page order, and second side data in which the printing data of set or selected pages from among the printing data is printed, and printing the first side data on a first side of the printing paper and the second side data on a second side of the printing paper such that a page can be viewed, and previous and/or following pages can be simultaneously viewed on an adjacent page.